Before enrollment of youth began in the Youth Incentive Entitlement Pilot Projects (YIEPP) program, a survey was conducted of program eligible youth in four of the largest Entitlement areas and in four matched control sites in order to provide baseline data for an impact analysis of the YIEPP program. After probability sampling, over 120,000 households were interviewed in the eight sites, and family income eligibility as well as the presence of program eligible youth was ascertained in each case. Enumerators then returned to each of the potentially eligible households and secured lengthy interviews with the eligible youths and their parents. As a result, a data set containing information on 7,553 youths was assembled. This sample size was then narrowed to 6,415 youths which included only 16- to 19-year-olds who had not graduated from high school and who came from low-income families. This baseline survey of program-eligible youth and their parents was completed spring 1978. The survey captured information on demographic and family background characteristics which included income, income sources, and pre-program behavior with regard to schooling and work experience. It was in no way identified with the YIEPP program. Three annual waves of re-interviews are planned for this sample, and the data will be used to increase basic knowledge in the area of youth transition from school to work and adulthood and to develop the models and methods necessary for the proper impact evaluation of the program. (BM)